Question

verifique se o par ordenado ( 3,1) e
 solucao das equaçoes a) 2x - y = 5 b) x + y = 4 c) x - 2y = 3 d) x + 4y = 6

Answer 1

Ola Neia

a( 2x - y = 2*3 - 1 = 5 (V)

b) x + y = 3 + 1 = 4 (V)

c) x + 4y = 3 + 4 = 7 (F)

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